#用来存储共同点内容

#自定义过滤器，实现热门新闻颜色提示
from flask import current_app, session, g
from functools import wraps


def do_index_class(index):
    if index == 1:
        return 'first'
    elif index == 2:
        return 'second'
    elif index == 3:
        return 'third'
    else:
        return ''

#登陆装饰器
def user_login_data(view_func):
    @wraps(view_func)
    def wrapper(*args, **kwargs):
        # 获取用户编号
        user_id = session.get('user_id')

        # 查询用户对象
        user = None
        if user_id:
            try:
                from info.models import User
                user = User.query.get(user_id)
            except Exception as e:
                current_app.logger.error(e)
        #保存用户对象到g
        g.user = user

        return view_func(*args, **kwargs)
    return wrapper
